Flora of North America species comparison

1, glabrous or leaf axils tomentose.

usually 1, rarely 2–3, loosely clustered, glabrous.

(and proximal cauline) petiolate;

blades spatulate to obovate (pinnately lobed, terminal lobes ovate to oblong, lateral lobes 2–6+ pairs, smaller, midribs narrowly winged), 100–300+ × 20–50(–80+) mm, bases contracted to tapering, ultimate margins crenate or dentate to lacerate (faces glabrous).

petiolate;

blades ovate, obovate, or elliptic, 20–40+ × 10–30+ mm, bases tapering to contracted, margins subentire to crenate-dentate.

gradually reduced (petiolate or sessile; obovate, irregularly incised to subpinnate, terminal lobes narrow).

abruptly reduced (sessile, often weakly clasping, dentate to subentire; distals sessile, lanceolate, weakly clasping, entire or dentate).

usually ebracteate (rarely with 1–2 bractlets), glabrous.

sparsely bracteate or ebracteate, glabrous.

8–10+;

corolla laminae 10–15+ mm.

13;

corolla laminae 7–12+ mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–4.5 mm.

40–55+;

corolla tubes 2.5–3.5 mm, limbs 2.5–3.5 mm.

13 or 21, green, 7–9+ mm, glabrous.

(13–)21, green (tips sometimes cyanic), 5–8+ mm, glabrous.

inconspicuous.

(bractlets frequently cyanic).

15–50+ in corymbiform arrays.

1(–5; sometimes subtended by 2 relatively large bractlets).

2–2.5 mm, glabrous;

pappi 6–7 mm.

1.5–2.5 mm, glabrous;

pappi 4–6 mm.

= 46.

= 46, 90.